I hope you are right; I see WebAssembly (or a potential successor) to be the missing gap in the ecosystem, which Java (as well as some previous small attempts)

I hope you are right; I see WebAssembly (or a potential successor) to be the missing gap in the ecosystem, which Java (as well as some previous small attempts) attempted to be. Since javascript (or ecmascript for the purists) now runs server-side (e.g. node.js), there's no reason wasm could not run everywhere.